Related Party Transactions - Additional Information (Detail) (USD $)	1 Months Ended								3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Feb. 28, 2011	Jan. 31, 2011	Jun. 30, 2010	Aug. 31, 2012	Jul. 05, 2012	Mar. 02, 2010	Jan. 20, 2010 Deutsche Bank and S & T International Distribution Limited	Dec. 31, 2012 Deutsche Bank	Dec. 31, 2012 Brighton Marketing Limited and the Grande Properties Management Limited	Dec. 31, 2011 Brighton Marketing Limited and the Grande Properties Management Limited	Dec. 31, 2012 Brighton Marketing Limited and the Grande Properties Management Limited	Dec. 31, 2011 Brighton Marketing Limited and the Grande Properties Management Limited	Dec. 31, 2011 Amount owed from Emerson to Brighton Marketing Limited	Dec. 31, 2012 Lafe Strategic Services Limited	Dec. 31, 2012 Lafe Strategic Services Limited	Dec. 31, 2011 Lafe Strategic Services Limited	Dec. 31, 2012 Mr. Eduard Will, a director of Emerson	Dec. 31, 2011 Mr. Eduard Will, a director of Emerson	Dec. 31, 2012 Mr. Eduard Will, a director of Emerson	Dec. 31, 2011 Mr. Eduard Will, a director of Emerson	Dec. 31, 2012 Vigers Appraisal & Consulting Ltd	Dec. 31, 2011 Vigers Appraisal & Consulting Ltd	Dec. 31, 2012 Vigers Appraisal & Consulting Ltd	Dec. 31, 2011 Vigers Appraisal & Consulting Ltd	Dec. 31, 2012 Grande Properties Management Limited	Dec. 31, 2011 Grande Properties Management Limited	Dec. 31, 2012 Grande Properties Management Limited	Dec. 31, 2011 Grande Properties Management Limited
Related Party Transaction [Line Items]
Grande's (Provisional Liquidator Appointed) Ownership Interest in Emerson number of shares					15,243,283
Grande's (Provisional Liquidator Appointed) Ownership Interest Percentage					56.20%
Number of securities pledged by major shareholder							3,780,600
Number of pledged shares sold by pledged								391,199
Pledged Shares, Net								3,380,079
Pledged Shares, Gross								3,389,401
Percentage of Pledged Shares, Gross								12.50%
Accounts Payable Related Party									$ 1,000	$ 5,000	$ 4,000	$ 30,000													$ 11,000	$ 9,000	$ 31,000	$ 18,000
Related Service Charges Related to Rented Office Space in Hong Kong													1,000
Rental income														9,000	18,000
Security deposit paid at inception of agreement															6,000
Notice period to cancel rental agreement															1 month
Consulting fees paid to Mr. Eduard Will, a director of Emerson			42,000														31,000	20,000	93,000	33,000
Expense reimbursements and advances paid to Mr. Will, a director of Emerson, related to this consulting work and his service as a director of Emerson																	12,000	7,000	12,000	18,000
Amount owed between Emerson and Mr. Will in the form of unused travel advances																		1,000		1,000
Extraordinary dividend declared						$ 1.10
Company's assertion as to the percent of the dividend that is taxable to the recipient						4.90%
Internal Revenue Service's assertion as to the percent of the dividend that is taxable to the recipient, which the company is refuting				100.00%
Agreement transaction fees			33,000
Waive of legal charges		5,000
Receipts from related party for amount owned	70,000
Usage of telephone and data lines maintained by Emerson																					1,000	1,000	3,000	3,000
Amount owed to Emerson from Vigers Appraisal & Consulting Ltd